[You suddenly recall what Rona once told you, "The divide between human and god isn't simply breached with strength alone, the key lies in... 'Authority'!"]
[Only by elevating one's own Authority to a level nearing that of gods can one use Authority to lift the Shell along with them to ascend to 'Immortal'!]
[Special attributes are a manifestation of a weaker version of Authority, unrelated to the Shell, linking only to the Soul.]
[Therefore, even if you kill a Monster with a special attribute and possess its Shell, you cannot inherit its special attribute, because the 'Authority' is not within the Shell, but within the Soul!]
[After you killed the 'Executor,' its Soul was also annihilated by you; the Shell, deprived of Authority, naturally fell from Immortal back to Mythical…]
[You used 'Beginning of the Holy Spirit' to temporarily elevate your own Authority to the heights of the gods.]